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Table 2-2 Design Criteria Topic Design Criteria for the Proposed Action TRANSPORTATION SYSTEM Existing Roads Existing roads would be left in a condition equal to or better than that observed on MCC's entry into the area or to the satisfaction of the USFS representative. At the completion of mining operations MCC will blade and crown all roads; shape and repair shoulders; clean all culverts and drainage ditches; and perform all other road maintenance work necessary to insure satisfactory functioning of the road drainage system. FS Roads 710, 711, Horse Gulch Road (711.2b) and Sylvester Gulch Roads would be used to access area. Access to the area would primarily be on the Sylvester Gulch Road. Periodically large vehicles may need to mobilize via the county portion Minnesota Creek Road, however use will be minimized. Roads will be kept clear of slides, fallen timber, and overhanging brush which obstructs visibility.* Gravel or other selected surfacing material will not be bladed off of roads. Two segments of existing full-size road upgrades (totaling approximately % mile) in Poison Gulch connecting to Elijah Park will remain open to allow public hunting access as recommended by Colorado Division of Wildlife to Elijah Park. Existing "loop" road in T 135, R 90W Section 33 and T 14S, R 90W Section 4 will be decommissioned by obliteration at the end of the project, but existing spurs in T 14S, R 90W, W 1/2 Section 4 connecting Deer Creek Road to private will remain open to allow public hunting and private access without duplication of routes as recommended by Colorado Division of Wildlife. MCC must provide specific improvement and use parameters using the AASHTO design criteria (Guideline for geometric design of very low volume roads (2001 edition) and Design guide for pavement structures (1993 edition)) or as approved by Forest Engineer, to be designed by a Colorado Registered Professional Civil Engineer, and submitted for USFS approval for each road segment. The Engineer's recommendations must be approved and implemented before any project related traffic may use that part of the NFSR system. During the course of the project the Forest Service will provide oversight of road improvement activities and continued monitoring of road conditions resulting from project related traffic. For roadway section with 6 inches OR LESS of new structural surfacing section or existing surfacing sections with any aggregate segregation or contamination by intruding fine materials, no rutting, pumping or plastic deformation of the roadway surface will be allowed. Rutting, plastic deformation, or pumping of the surface will result in the proponent's operations, on that road, ceasing immediately and remaining shutdown until repairs and improvements are made to prevent additional damage to the structural section. For surfacing sections with GREATER THAN 6 inches of new structural surfacing section any rutting, pumping or plastic deformation in excess of structural section thickness (T) divided by 3 (T/3) will not be allowed and will result in proponent's operations, on that road, ceasing immediately and remaining shutdown until repairs and improvements are made to prevent additional rutting. This Tl3 limitation applies to any forest road utilized by the proponent, even if it is not part of the project area or transportation plan. Once shutdown, operations will not resume until a roved re airs or im rovements are made to resolve the roblem. LJ LJ 1 LJ 22 Deer Creek Ventilation Shaft and E Seam Methane Drainage Wells DEIS ,